A new arrival is being shown around Hell by Satan. Far fron the Hell he
   imagined, this place was more like heaven, with strip clubs, casinos,
   free booze, free girls (clean too!), in fact all the sinful things he
   liked to indulge in back on Earth. However, there was one thing strange
   about the place. There was a perfectly formed cone, about 500 feet high,
   a couple of miles away. When asked, Satan declined to answer as to its
   function, telling our friend to ignore it. But he was even more curious
   so he pressed Satan for an answer. "Go and have a look then, if you must"
   said Satan, so he did.
   Having climbed almost to the top, he could hear strange noises coming from
   within. Screams and suchlike...
   So he peered over the edge into what looked like the crater of a volcano,
   with hundreds of people running around desperately trying in vain to
   dodge the huge jets of flame bursting out from the walls.
   Sliding back down again, he asked Satan what it was all about.
   Satan replied  " That's the Catholics, they insist upon it! "